Abstract: Abstract］  ObjectiveTo study the factors affecting endoscopic detection of heterotopic gastric mucosa of the esophagus（HGME）, and to discuss whether HGME is considered as a evaluation index of quality of esophageal endoscopy. MethodsProspective clinical study was performed on patients who received gastroscopy. Research data included endoscopist experience, withdrawal time of the esophagus, sedation endoscopy were recorded.  HGME detection rates and the factors influencing HGME in gastroscopy were analyzed. ResultsA total of 2 000 patients were included in this paper，of which 194 were found to have heterotopic gastric mucosa of the esophagus, the detection rate was 9.7%. The experience level of HGME group was higher than that of non HGME group, and the rate of sedation endoscopy was higher than that of non HGME group, the withdrawal time was longer than that of non HGME group, the difference was statistically significant(P＜005), and the detection rate of HGME was increased with the increase of physician experience. Correlation analysis showed that physician experience was positively related to HGME detection rate(rs=0.685, P=0.001). ConclusionDetection rate of heterotopic gastric mucosa of the esophagus could be regard as an evaluation index of esophagus quality control.

Key words: heterotopic gastric mucosa of the esophagus, gastroscopy, root cause analysis